Improvement in plows



o. M. LUFKIN.

Side-Hill Plow.

Pa'tentd June *1 9, 866

NJ'EFERS, PNOTO-LITHO'GRAPHER] WASHINGTON. a ct PATENT OFFICE.

(J. M. LUFKIN, OF OLAREMONT, NEWV HAMPSHIRE.

IMPROVEMENT IN PLOWS.

Specification forming part of Letters Patent No. 55,684, dated June 19,1866.

To all whom it may concern Be it known that I, G. M. LUFKIN, ofGlaremont, in the county, of Sullivan and State of New Hampshire, haveinvented certain new and useful Improvements in Flows; and I do herebydeclare that the following is a full, clear, and exact description ofthe same,-reference being had to the accompanying drawings, making apart of this specification, in which- Figure 1 is a side sectional viewof my invention. Fig. 2 is a back view of the same. Fig. 3 is a plan ortop view of the same. Fig.

4 is a detached side view of the cutter and device by which it isoperated. Fig. 5 is a detached side view of the extension-rod andlatch.- Figs. 6 and 7 are corresponding detached back views of thecutter, showing the device'by which it is operated. Fig.8 is a sidesectional view of the device by which the mold-board and cutter areretained in working position.

This invention consists in attaching an independent cutter to theplow-beam and connectin g the cutter with the mold-board in such amanner that the cutter will be shifted from side to side in line withthe landside, and also held in working position by shifting themoldboard, as herei 11 after fully shown and described, the plow beingof the kind which is commonly termed a side hill or reversible plow.

The object of this invention is to obtain a self-adj ustin g cutterwhich will always be adjusted in proper position with the share as themold-board is turned or adjusted from one side of the beam to the other.

To enable those skilled in the art to fully understand and construct myinvention, I will proceed. to describe it.

A represents the beam of the plow, B B the handles, and G the landside,which is connected and secured by the standard D D to the beam A.

E represents the share of the plow, and F the mold-board. These partsmay be of the ordinary form of those generally used 011 reversibleplows.

The back part of the share E is pivoted to the front end of the landsideO, and the inner side of the mold-board F has a V-shaped brace, G,attached to it, which is pivoted to the back end of the landside C. Bythis arrangement the mold-board F may be turned around underneath thelandside C, so as to be adjusted to either side of thebeam A, as may berequired. The mold-board and cutter I are retained in proper position bya latch, L, which catches alternately on the catches g g on the brace G.The latch L is attached to a tube,H, by means of a fulcrum, c, in smalluprights h, and is kept in proper position by a V-shaped spring, 0, andin the said tube is inserted a slide-rod, K,forming an extension'rod,being connected with the brace G by means of a swivel, (Z, and alsoconnected with a shaft, N, by a pivot, l),- and when the plow isreversed the slide-rod K is extended longitudinally in the tube I-I,serving the twofold purpose of guiding the latch L to the catches g gand of partially rotating the shaft N, which extends from the pivot 11along under the beam A, through the standard D D, which forms bearings aa for said shaft.

On the forward end of the shaft N is an eccentric, M, with which thecutter I is connected by means of a pivot, f, on the said cutter.

The eccentric M is so fitted in the socket J that when the shaft N ispartially rotated by means of reversing the plow the cutter I isoscillated laterally into proper position in line, or nearly so, withthe landside O, and there permanently retained, and oscillated into its-corresponding position, as shown in Figs. 6

and 7, by again readjusting the mold-board to the opposite side.

The cutterl is so fitted to the socket J, which is attached to the beamA, as only to admit of sufficient movement to allow the said cutter tooscillate into proper position, being retained permanently against thewalls of the said socket by the eccentric M.

When it is desired to reverse the plow the operator depresses the latchL by means of the foot, raises the handles B 13, giving them a properlateral. movement, by which the moldboard and cutter are easily reversedand fastened in proper position.

I do not claim a reversible mold-board ap plied to a plow, for that isan old and wellknown device; but

I do claim as new and desire to secure by Letters Patent-- I I I ,y

1. A cutter, I, of any convenient form, opcr- 3. The-pivot f on thecutter I, in connection ated and connected by an eccentric, M, shaftWith the eccentric M and socket J, all con- N, tube H, and slide-rod K,to the mold-board structed,arranged,an(1 operating substantially F insuch a manner as to admit of the oscillaas and for the purposespecified. tion of the cutterby the adj ustmentof the moldboard, asherein set forth. LUFKIN' 2. A tube, H, slide-rod K, latch L, spring 6,Witnesses:

and catches g g, operating and arranged sub- LUGINA O. DAVIS, stantiallyas and for the purpose herein set FRANK E. DAVIS. forth. r

